Good day! How does one add apps to be recognized in the "open in " window tab in applications.
For example, when i am in the app "PDF Provider" and convert a document to a PDF file. Now I want to move that file. I than touch on the curved black arrow which opens a window with the following ,"open in,Send file, Rename file, Delete".When I touch "open in" it gives me the chance to move the pdf in Ibooks, Print central and etc, but does not recognize the app I want which is "PDF Expert" How does one add apps to the "open in " window basically ?
thank you for your time! gt